RS>MR> For 60 Hz AC the skin depth is about 1/3 of an inch. The greater
RS>MR> part of the current flows in this outer area but the total current
RS>MR> flows out to about 5 skin depths, less and less as it goes deeper.
RS>MR> Below this 5 skin depth no current flows and the wire may as well
RS>MR> be hollow or made out of steel, which is exactly what is used to
RS>MR> make the cables strong.

RS>RJT>  I've seen this claim before,  probably in here some time back,
RS>RJT> but that's first time I've actually seen it quantified like that.
RS>RJT> A third of an inch huh?

RS> I always thought that the skin effect was
RS>negligible at low (60Hz) frequencies.

You just jogged my memory. The skin effect IS negligible at
low freqs.

Jay
---
 þ OLXWin 1.00b þ I'm an amateur crastinator..one day I'll turn pro.